What causes back pain and knee pain?

Back pain, knee pain common causes, including the following aspects: First, osteoporosis, due to osteoporosis caused by bone loss, showing abnormal bone metabolism, in the waist, knee weight-bearing parts easy to show pain problems. Second, visible in ankylosing spondylitis, due to the influence of ankylosing spondylitis, will also show corresponding back pain and joint pain, including knee pain. Third, visible in the high lumbar disc herniation, such as lumbar 2-3 disc herniation is easy to cause femoral nerve root compression, showing low back pain and knee pain. It is recommended that patients go to the hospital for detailed examination, including bone mineral density examination, lumbar and knee joint imaging examination, after a clear diagnosis of the corresponding treatment.